Regulatory mechanism of a heat-activated retrotransposon by DDR complex in Arabidopsis thaliana
The RNA-directed DNA methylation (RdDM) pathway plays an essential role in the transposon silencing mechanism; the DDR complex, consisting of DRD1, DMS3, and RDM1, is an essential component of the RdDM pathway. ONSEN, identified in Arabidopsis, is a retrotransposon activated by heat stress at 37°C;...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-12-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.1048957/full |
| _version_ | 1797979710355931136 |
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| author | Xiaoying Niu Lu Chen Atsushi Kato Hidetaka Ito |
| author_facet | Xiaoying Niu Lu Chen Atsushi Kato Hidetaka Ito |
| author_sort | Xiaoying Niu |
| collection | DOAJ |
| description | The RNA-directed DNA methylation (RdDM) pathway plays an essential role in the transposon silencing mechanism; the DDR complex, consisting of DRD1, DMS3, and RDM1, is an essential component of the RdDM pathway. ONSEN, identified in Arabidopsis, is a retrotransposon activated by heat stress at 37°C; however, studies on the regulation of ONSEN are limited. In this study, we analyzed the regulation of ONSEN activity by the DDR complex in Arabidopsis. We elucidated that loss of any component of the DDR complex increased ONSEN transcript levels. Transgenerational transposition of ONSEN was observed in the DDR-complex mutants treated with heat stress for 48 h. Furthermore, the DDR complex components DRD1, DMS3, and RDM1 played independent roles in suppressing ONSEN transcription and transposition. Moreover, we found that the duration of heat stress affects ONSEN activity. Therefore, the results of this study provide new insights into the retrotransposon regulatory mechanisms of the DDR complex in the RdDM pathway. |
| first_indexed | 2024-04-11T05:43:02Z |
| format | Article |
| id | doaj.art-08f4f1bf51204b8d899d61aca672640d |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-11T05:43:02Z |
| publishDate | 2022-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-08f4f1bf51204b8d899d61aca672640d2022-12-22T04:42:20ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-12-011310.3389/fpls.2022.10489571048957Regulatory mechanism of a heat-activated retrotransposon by DDR complex in Arabidopsis thalianaXiaoying Niu0Lu Chen1Atsushi Kato2Hidetaka Ito3Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido, JapanGraduate School of Life Science, Hokkaido University, Sapporo, Hokkaido, JapanFaculty of Science, Hokkaido University, Sapporo, Hokkaido, JapanFaculty of Science, Hokkaido University, Sapporo, Hokkaido, JapanThe RNA-directed DNA methylation (RdDM) pathway plays an essential role in the transposon silencing mechanism; the DDR complex, consisting of DRD1, DMS3, and RDM1, is an essential component of the RdDM pathway. ONSEN, identified in Arabidopsis, is a retrotransposon activated by heat stress at 37°C; however, studies on the regulation of ONSEN are limited. In this study, we analyzed the regulation of ONSEN activity by the DDR complex in Arabidopsis. We elucidated that loss of any component of the DDR complex increased ONSEN transcript levels. Transgenerational transposition of ONSEN was observed in the DDR-complex mutants treated with heat stress for 48 h. Furthermore, the DDR complex components DRD1, DMS3, and RDM1 played independent roles in suppressing ONSEN transcription and transposition. Moreover, we found that the duration of heat stress affects ONSEN activity. Therefore, the results of this study provide new insights into the retrotransposon regulatory mechanisms of the DDR complex in the RdDM pathway.https://www.frontiersin.org/articles/10.3389/fpls.2022.1048957/fullepigeneticstransposonsenvironmental stressArabidopsis thalianaONSEN |
| spellingShingle | Xiaoying Niu Lu Chen Atsushi Kato Hidetaka Ito Regulatory mechanism of a heat-activated retrotransposon by DDR complex in Arabidopsis thaliana Frontiers in Plant Science epigenetics transposons environmental stress Arabidopsis thaliana ONSEN |
| title | Regulatory mechanism of a heat-activated retrotransposon by DDR complex in Arabidopsis thaliana |
| title_full | Regulatory mechanism of a heat-activated retrotransposon by DDR complex in Arabidopsis thaliana |
| title_fullStr | Regulatory mechanism of a heat-activated retrotransposon by DDR complex in Arabidopsis thaliana |
| title_full_unstemmed | Regulatory mechanism of a heat-activated retrotransposon by DDR complex in Arabidopsis thaliana |
| title_short | Regulatory mechanism of a heat-activated retrotransposon by DDR complex in Arabidopsis thaliana |
| title_sort | regulatory mechanism of a heat activated retrotransposon by ddr complex in arabidopsis thaliana |
| topic | epigenetics transposons environmental stress Arabidopsis thaliana ONSEN |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.1048957/full |
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